CVE-2026-40148: CWE-409: Improper Handling of Highly Compressed Data (Data Amplification) in MervinPraison PraisonAI
PraisonAI is a multi-agent teams system. Prior to 4.5.128, the _safe_extractall() function in PraisonAI's recipe registry validates archive members against path traversal attacks but performs no checks on individual member sizes, cumulative extracted size, or member count before calling tar.extractall(). An attacker can publish a malicious recipe bundle containing highly compressible data (e.g., 10GB of zeros compressing to ~10MB) that exhausts the victim's disk when pulled via LocalRegistry.pull() or HttpRegistry.pull(). This vulnerability is fixed in 4.5.128.
AI Analysis
Technical Summary
PraisonAI's _safe_extractall() function in versions before 4.5.128 performs path traversal validation on archive members but lacks checks on the size and count of extracted files. This allows an attacker to craft a malicious recipe bundle containing highly compressible data that decompresses to a very large size, causing disk exhaustion when extracted via LocalRegistry.pull() or HttpRegistry.pull(). This improper handling of highly compressed data is classified under CWE-409 (Improper Handling of Highly Compressed Data leading to Data Amplification). The vulnerability is addressed in PraisonAI version 4.5.128.
Potential Impact
Exploitation of this vulnerability can cause denial of service by exhausting disk space on the victim system during extraction of malicious recipe bundles. There is no impact on confidentiality or integrity reported. No known exploits are currently observed in the wild.
Mitigation Recommendations
Upgrade PraisonAI to version 4.5.128 or later, where this vulnerability is fixed. Since no official vendor advisory or patch link is provided, verify the upgrade from the vendor's official release notes. Until upgraded, avoid pulling recipe bundles from untrusted sources to reduce risk.
CVE-2026-40148: CWE-409: Improper Handling of Highly Compressed Data (Data Amplification) in MervinPraison PraisonAI
Description
PraisonAI is a multi-agent teams system. Prior to 4.5.128, the _safe_extractall() function in PraisonAI's recipe registry validates archive members against path traversal attacks but performs no checks on individual member sizes, cumulative extracted size, or member count before calling tar.extractall(). An attacker can publish a malicious recipe bundle containing highly compressible data (e.g., 10GB of zeros compressing to ~10MB) that exhausts the victim's disk when pulled via LocalRegistry.pull() or HttpRegistry.pull(). This vulnerability is fixed in 4.5.128.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
PraisonAI's _safe_extractall() function in versions before 4.5.128 performs path traversal validation on archive members but lacks checks on the size and count of extracted files. This allows an attacker to craft a malicious recipe bundle containing highly compressible data that decompresses to a very large size, causing disk exhaustion when extracted via LocalRegistry.pull() or HttpRegistry.pull(). This improper handling of highly compressed data is classified under CWE-409 (Improper Handling of Highly Compressed Data leading to Data Amplification). The vulnerability is addressed in PraisonAI version 4.5.128.
Potential Impact
Exploitation of this vulnerability can cause denial of service by exhausting disk space on the victim system during extraction of malicious recipe bundles. There is no impact on confidentiality or integrity reported. No known exploits are currently observed in the wild.
Mitigation Recommendations
Upgrade PraisonAI to version 4.5.128 or later, where this vulnerability is fixed. Since no official vendor advisory or patch link is provided, verify the upgrade from the vendor's official release notes. Until upgraded, avoid pulling recipe bundles from untrusted sources to reduce risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-04-09T19:31:56.012Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69d843771cc7ad14da3fb5c0
Added to database: 4/10/2026, 12:25:27 AM
Last enriched: 4/10/2026, 12:37:25 AM
Last updated: 4/10/2026, 8:14:41 AM
Views: 7
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